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Water Pressure Drop

01-01-2008, 11:12 PM

My bathroom faucet, (cold water only) when i turn on the water, the GPM will drop if it turn it on fast. If i turn it on slow, the GPM will steadily increase, then eventually will drop. I can get a higher volume of water if i go slow.

What is causing this and what can i do to fix it? I do not notice this happening in the basement deepsink or the kitchen sink.

Comment

There are some very qualified plumbers here that are good at troubleshooting existing fixtures.Because the other fixtures are working satisfactory I would assume your Kohler faucet has issues.Not my claim to fame.

once you disconnect the cold water feed from the faucet. you will then put a bucket under the cold connection from the faucet. open the cold full and turn on the hot. there will either be a large flow coming out the cold side or a little flow.

little flow means plugged inside the faucet. large flow is good.

while the faucet cold is disconnected, turn the cold valve/ angle stop on and run it into a bucket to check the flow. it could be an angle stop.

Comment

The problem was the cold side of the faucet. i did a back flow, but it was not as good as it should be... and then i broke the faucet trying to get to the stem valve/washers, so now have a brand new faucet!!! lol

I also replaced the angle stops as they were leaking when i shut them off.